A collaborative robot arm for being used in an explosive environment includes electronics contained in at least one housing with at least one opening and a pressurization system configured for pressurizing the at least one housing with a gas at a predefined pressure level above atmospheric pressure.

A fuel dispenser adaptor kit includes an adaptor tool and a ferromagnetic unit configured for being part of or attached to a fuel dispenser. The adaptor tool has a magnet configured for magnetically engaging with the ferromagnetic unit, and an activator configured for activating a lever of the fuel dispenser.